HYMEN OPTER A. 
11 
27. Eobmica feateena. 
Operaria. — F. rvfo-fusca, sparse pilosula ; mandibulis, antennarum scapis, flagellorum 
bast, pedibusque pallide rufescentibus ; area frontali opaca. 
The insect covered with a tine grey pile; the anterior part of the head rufo -testaceous, 
the mandibles ferruginous; the scape of the antennae and a few of the basal joints of the 
flagellum pale ferruginous ; the legs and scale of the peduncle entirely of that colour ; 
the scale rounded above. The base of the abdomen in some examples more or less tinged 
with ferruginous; the abdomen with a few scattered pale setee. Worker, length 2f to 3 lines. 
Sab. — No precise locality indicated. 
This species very closely resembles the Formica cunicularia of Europe, hut its pale legs 
give it a different aspect. 
28. Eobmica defensoe. 
Operaria. — F. rufo-ferruginea, Icevissime cinereo-micans ; fronte abdomineque fusco-nigris ; 
squama sub triangular iter, margine supero rotundato. 
Head, thorax, legs, antennae, and squama rufo-ferruginous ; the apical half of the 
flagellum and the front above the insertion of the antennae, fuscous; an impressed line 
from the anterior ocellus to the clypeus, the latter with a sharp central carina; the 
frontal area opaque ; the teeth of the mandibles black ; the head and the flagellum with 
fine cinereous pile. 
The abdomen fusco-ferruginous at the base, and the extreme apex pale ferruginous ; the 
abdomen covered with a fine cinereous pile; beneath fusco-ferruginous. Worker, length 
2f lines. 
Sab. — On the road across the Pamir, from Sarikol to Panja. (April and May.) 
29. Eobmica Candida. 
Eemina. — F. nigra nitidissima ; mandibulis, antennis, pedibusque rufescentibus ; squama 
lata, subtriangulariter, margine supra rotundato. 
Shining black; the mandibles, antenme, and legs ferruginous; the latter slightly 
fuscous above, as are also a few of the apical joints of the flagellum above. The head, the 
width of the thorax ; the clypeus with a sharp central carina ; the frontal area semiopaque ; 
the mandibles stout, and with longitudinal punctures. The metathorax semiopaque, and 
with a fine cinereous pile, which also covers the squama, legs, and thorax on the sides and 
beneath. Abdomen oblong-ovate, very smooth and shining, and with a sprinkling of pale 
hairs at the apex ; the extreme apex pale testaceous. Eemale, length 3J- lines. 
Sab. — On the road across the Pamir, from Sarikol to Panja. (April and May.) 
Fatnil y—MYBM ICI DJE, (Sm.) 
30. Mvbmica cuesoe. 
Eemina. — 31. sordide rubra ; capite thoraceque longitudinaliter striatis ; abdomine fusco- 
nigro, nitido ; mandibulis, antennis, pedibusque pallide ferrugineis. 
Obscure ferruginous, with the head sometimes nearly black, or with the sides more or 
less ferruginous ; the antennae with the scape and a few of the basal joints of the flagellum 
